California earthquakes

M2.1 earthquake 3 km SSE of Sunol, California

A magnitude 2.1 earthquake struck 3 km SSE of Sunol, California on Fri, Dec 20, 1985, 5:39 AM PST (13:39 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.1 5 km NNE of Tres Pinos, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.1 (md), micro
Local time
UTC
1985-12-20 13:39:54 UTC
Depth
8.3 km (5.2 mi), shallow
Epicenter
37.568° N, 121.878° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.2 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
38°
Stations used
63

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 189 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.04 km NE of Tres Pinos, California · 14849 days ago · 8 km deep · 99 km away
  2. 2.15 km NNE of Tres Pinos, California · 14849 days ago · 4 km deep · 97 km away
  3. 2.44 km NE of Tres Pinos, California · 14849 days ago · 8 km deep · 99 km away
  4. 1.74 km ENE of Tres Pinos, California · 14849 days ago · 8 km deep · 100 km away
  5. 2.34 km NE of Tres Pinos, California · 14849 days ago · 7 km deep · 99 km away
  6. 4.04 km NE of Tres Pinos, California · 14849 days ago · 5 km deep · 98 km away
  7. 2.94 km ENE of Tres Pinos, California · 14849 days ago · 9 km deep · 100 km away
  8. 2.24 km NE of Tres Pinos, California · 14849 days ago · 4 km deep · 98 km away
  9. 1.73 km NE of Tres Pinos, California · 14849 days ago · 2 km deep · 99 km away
  10. 1.64 km NE of Tres Pinos, California · 14849 days ago · 4 km deep · 98 km away
  11. 2.24 km NE of Tres Pinos, California · 14849 days ago · 7 km deep · 98 km away
  12. 2.94 km NNE of Tres Pinos, California · 14849 days ago · 5 km deep · 97 km away
  13. 2.05 km NNE of Tres Pinos, California · 14849 days ago · 7 km deep · 97 km away
  14. 1.64 km NE of Tres Pinos, California · 14849 days ago · 9 km deep · 99 km away
  15. 1.74 km NNE of Tres Pinos, California · 14849 days ago · 6 km deep · 97 km away
  16. 2.14 km NE of Tres Pinos, California · 14849 days ago · 8 km deep · 99 km away
  17. 2.85 km NE of Tres Pinos, California · 14849 days ago · 3 km deep · 97 km away
  18. 2.55 km NE of Tres Pinos, California · 14849 days ago · 9 km deep · 98 km away
  19. 1.95 km NE of Tres Pinos, California · 14849 days ago · 9 km deep · 99 km away
  20. 2.84 km NE of Tres Pinos, California · 14849 days ago · 7 km deep · 98 km away
  21. 1.94 km NE of Tres Pinos, California · 14849 days ago · 1 km deep · 99 km away
  22. 1.74 km NNE of Tres Pinos, California · 14849 days ago · 5 km deep · 97 km away
  23. 1.94 km NE of Tres Pinos, California · 14848 days ago · 9 km deep · 99 km away
  24. 1.64 km NE of Tres Pinos, California · 14848 days ago · 9 km deep · 99 km away
  25. 1.63 km NNE of Tres Pinos, California · 14848 days ago · 3 km deep · 98 km away
  26. 2.16 km NNE of Tres Pinos, California · 14848 days ago · 7 km deep · 96 km away
  27. 3.34 km NE of Tres Pinos, California · 14848 days ago · 4 km deep · 98 km away
  28. 1.64 km NE of Tres Pinos, California · 14848 days ago · 4 km deep · 98 km away
  29. 1.84 km NE of Tres Pinos, California · 14848 days ago · 4 km deep · 98 km away
  30. 2.74 km NNE of Tres Pinos, California · 14848 days ago · 4 km deep · 97 km away
  31. 3.05 km NNE of Tres Pinos, California · 14848 days ago · 7 km deep · 97 km away
  32. 2.85 km NNE of Tres Pinos, California · 14848 days ago · 7 km deep · 97 km away
  33. 1.74 km NE of Tres Pinos, California · 14848 days ago · 2 km deep · 98 km away
  34. 2.24 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 99 km away
  35. 2.94 km NE of Tres Pinos, California · 14848 days ago · 10 km deep · 99 km away
  36. 1.82 km NNE of Ashland, California · 14848 days ago · 5 km deep · 26 km away
  37. 2.85 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 98 km away
  38. 2.45 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 98 km away
  39. 1.64 km NE of Tres Pinos, California · 14848 days ago · 7 km deep · 98 km away
  40. 2.95 km NE of Tres Pinos, California · 14848 days ago · 9 km deep · 98 km away
  41. 1.54 km NE of Tres Pinos, California · 14848 days ago · 7 km deep · 99 km away
  42. 2.54 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 98 km away
  43. 1.8Central California · 14848 days ago · 8 km deep · 98 km away
  44. 1.64 km ENE of Tres Pinos, California · 14848 days ago · 8 km deep · 100 km away
  45. 1.84 km NE of Tres Pinos, California · 14848 days ago · 4 km deep · 99 km away
  46. 2.16 km NNE of Tres Pinos, California · 14848 days ago · 7 km deep · 96 km away
  47. 2.64 km NNE of Tres Pinos, California · 14848 days ago · 4 km deep · 97 km away
  48. 2.64 km NNE of Tres Pinos, California · 14848 days ago · 4 km deep · 97 km away
  49. 2.25 km NNE of Tres Pinos, California · 14848 days ago · 7 km deep · 97 km away
  50. 2.46 km NNE of Tres Pinos, California · 14848 days ago · 4 km deep · 95 km away
  51. 1.55 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 98 km away
  52. 2.85 km NNE of Tres Pinos, California · 14848 days ago · 5 km deep · 97 km away
  53. 1.66 km NNE of Tres Pinos, California · 14848 days ago · 4 km deep · 95 km away
  54. 2.45 km NE of Tres Pinos, California · 14848 days ago · 9 km deep · 98 km away
  55. 1.54 km NE of Tres Pinos, California · 14848 days ago · 7 km deep · 99 km away
  56. 2.15 km NNE of Tres Pinos, California · 14848 days ago · 5 km deep · 97 km away
  57. 1.84 km NNE of Tres Pinos, California · 14848 days ago · 5 km deep · 97 km away
  58. 2.05 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 98 km away
  59. 1.89 km ENE of Seven Trees, California · 14848 days ago · 6 km deep · 31 km away
  60. 2.16 km NE of Ridgemark, California · 14847 days ago · 7 km deep · 94 km away

The first 60 of 189.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc61911. Read Tue, Sep 22, 2026, 8:36 PM UTC.